Depending on the processed material from each drill must be properly sharpened. To verify the correct angle will help a specially prepared square plate of copper or aluminium with a thickness of 1 mm.
To become operational protractor enough to cut it cut, as shown in the picture: a large cutout at an angle of 120 degrees, the other half is 60 degrees and the surviving corner of a square is 90.
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CHUCK — NO KEY
A nail and a screwdriver located as shown, will help you out, if in the bustle of work had disappeared the key from the Chuck of the drill and the drill bit must be urgently replaced.
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Often, returning from fishing or from the forest, we find that the rubber boots for the whole day become moist inside, even if you didn't see them in a puddle. The best way to refresh...
